Duplicate Title_N post field coming across

function addUploadFileHtml(index){
	var guid = "" + imageUploader1.getUploadFileGuid(index);
	var fileName = "" + imageUploader1.getUploadFileName(index);

	var h = "<table cellspacing=\"5\"><tbody>";
	h += "<tr>";
	h += "<td class=\"Thumbnail\" align=\"center\" valign=\"middle\">";

	//Add thumbnail control and link it with Image Uploader by its name and GUID.
	var tn = new ThumbnailWriter("Thumbnail" + uniqueId, 96, 96);
	//Copy codebase and version settings from ImageUploaderWriter instance.
	tn.activeXControlCodeBase = iu.activeXControlCodeBase;
	tn.activeXControlVersion = iu.activeXControlVersion;
	tn.javaAppletCodeBase = iu.javaAppletCodeBase;
	tn.javaAppletCached = iu.javaAppletCached;
	tn.javaAppletVersion = iu.javaAppletVersion;
	
	tn.activeXControlEnabled = iu.activeXControlEnabled ;
    tn.javaAppletEnabled = iu.javaAppletEnabled ;

	tn.addParam("ParentControlName", "ImageUploader1");
	tn.addParam("Guid", guid);
	tn.addParam("FileName", fileName);
	h += tn.getHtml();

	h += "</td>";
	h += "<td valign=\"top\">";

	//Add Title element.
	h += "Title:<br />";
	h += "<input id=\"Title" + uniqueId + "\" class=\"Title\" type=\"text\" /><br />";

	//Add Description element.
	h += "Description:<br />";
	h += "<textarea id=\"Description" + uniqueId + "\" class=\"Description\"\"></textarea>";

	h += "</td>";
	h += "</tr>";
	h += "<tr>";
	h += "<td align=\"center\"><a href=\"#\" onclick=\"return Remove_click('" + guid + "');\">Remove</a></td>";
	h += "<td></td>";
	h += "</tr>";
	h += "</tbody></table>";

	//Create DIV element which will represent the upload list item.
	var div = document.createElement("div");
	div.className = "UploadFile";
	div.innerHTML = h;
	div._guid = guid;
	//_uniqueId is used for fast access to the Title and Description form elements.
	div._uniqueId = uniqueId;

	//Append this upload list item to the custom upload pane.
	document.getElementById("UploadPane").appendChild(div);

	//Increase the ID to guaranty uniqueness.
	uniqueId++;
}

function ImageUploader_BeforeUpload(){
	var guidIndexHash = getGuidIndexHash();

	var UploadPane = document.getElementById("UploadPane");

	for (var i = 0; i < UploadPane.childNodes.length; i++){
		var div = UploadPane.childNodes[i];

		var index = guidIndexHash[div._guid];

		//Description will be sent as a native Description POST field 
		//provided by Image Uploader.
		imageUploader1.setUploadFileDescription(index,
			document.getElementById("Description" + div._uniqueId).value);

		//Title will be sent as a custom Title_N POST field, where N is an 
		//index of the file.
		imageUploader1.AddField("Title_" + index, document.getElementById("Title" + div._uniqueId).value);
	}
}